SFC 750 replica for sale Ontario CANADA

Very thorough work. Wonder how the lightweight cro-mo frame will cope with the inherent vibes? Or are SFCs all cro-mo? I've got a theory that the water pipe gauge used in SFs goes a long way to absorbing vibes - one of the reasons I've retained mine on the SFQ.

Personally I'd rather convert an SF motor to SFC spec (crank, valves, cams etc) and retain the SF frame with a few improvements like rearsets. I don't think I've seen even one SFC replica with an SFC crank - one of the most noticeable diffs between SFs and SFCs. The ad mentions modified rockers 'to SFC spec' - not aware that there's any diff between and SF2/3 rocker and an SFC rocker - SF1s and prior had the heavier rockers.
 
Lightened, balanced perfectly and carillo rods. His Ross Pistons are probably half the weight if my 1200 Ross Pistons are anything to go by.
It's 50 years later.
Not saying there is anything wrong with a SFC crank.
 
motoddrob said:
Lightened, balanced perfectly and carillo rods. His Ross Pistons are probably half the weight if my 1200 Ross Pistons are anything to go by.
It's 50 years later.
Not saying there is anything wrong with a SFC crank.
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SFC cranks are a far cry from a stock SF crank, Rob. The big press fit centre pin on SFCs is only possible because they use integral one-piece web-crankpin as per triples. My SFC crank is as light as I'd want it. Carillos are definitely an upgrade.

Prob is SFC cranks are pretty much unobtanium, so Red's custom cranks are an excellent alternative.
 
I wasn't referring to a stock SF crank.
I know the difference between the 2.
All I'm saying is Reds cranks are manufactured with the knowledge and expertise benefit of 50 years of advancement.
As I said, nothing wrong with a SFC crank
 
Phil Todd used to make his light twin cranks using an SFC press fit centre and triple webs.
I doubt that much will have changed over the last few decades.
Paul
 
motoddrob said:
I wasn't referring to a stock SF crank.
I know the difference between the 2.
All I'm saying is Reds cranks are manufactured with the knowledge and expertise benefit of 50 years of advancement.
As I said, nothing wrong with a SFC crank
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Misconstrued your earlier comment Rob ... "I reckon one of Red's cranks would be far superior than an original 74 SFC crank." :cool:

Whatever - I think we both agree that either option is more than fit for purpose.
 
piranha-bro2 said:
That's cheap for a 74 SFC! Seriously.
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Of course. Far from the near US $ 100 000 a rusty "original" example sold for 6 or 7 years back.
Prices have collapsed never to rise again. But writing that brings comments from "motorcyclists" who must ride their wallets rather than their motorcycles.
Paul
 
Paul Marx said:
Of course. Far from the near US $ 100 000 a rusty "original" example sold for 6 or 7 years back.
Prices have collapsed never to rise again. But writing that brings comments from "motorcyclists" who must ride their wallets rather than their motorcycles.
Paul
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Maybe at a mere US$39k they'll take it out regularly and thrash it ... unlikely ...
 
There’s no such thing as an SFC crankshaft, over the years at least 4 different ones were made, starting in 1971 with basically an SF type crank, yet heavily polished, extensively balanced, and with a different type ball bearing on the primary side. The half web cranks were used in production SFCs of 1974 onwards.

Marnix
 
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